Heat grips STL area through midweek

ST. LOUIS - St. Louis continues to flirt with triple digit temperatures and it sure feels like the dog days of summer.

The combination of high temperatures and humidity will lead to dangerously high heat indices persisting through Tuesday evening.

The excessive heat warning has been expanded to include much of Illinois and as well as the entire metro St. Louis area. Heat indices greater than 105 and possibly higher than 110 degrees will persist the next few afternoons.

A heat advisory is in effect for much of the rest of the viewing area due to heat indices between 100 and 105.

The oppressive heat will lead to an increased risk for heat-related illness. To prevent heat illness, avoid being outside during the peak heat of the afternoon